I am trying to restore Cyrus dAD1. Maybe it is not worth the effort - it really looks cheaply made - but I would like to add CD player to my Cyrus ONE line that matches the looks.
I have run into problem I need some help with: when I insert the CD and close the tray it does not mount the CD(00 is blinking) and CD drive does not engage. If I push PLAY the tray opens but nr. 1 is displayed on screen. However if I disconnect(unplug) the tray motor and close the the tray manually CD is recognised and will play normally.
The problem is somewhere on the PCB(I have Quattro that shares the identical mechanism and switching these the problem stay with dAD1). So I think that after closing the tray its motor should be switched off and only CD motor remain in the active circuit. There is a TDA7072 for tray motor control and TDA7073 for CD. Also there is a mechanical switch that engaged by rotation of tray gears that I don't know what it is doing.
I have run into problem I need some help with: when I insert the CD and close the tray it does not mount the CD(00 is blinking) and CD drive does not engage. If I push PLAY the tray opens but nr. 1 is displayed on screen. However if I disconnect(unplug) the tray motor and close the the tray manually CD is recognised and will play normally.
The problem is somewhere on the PCB(I have Quattro that shares the identical mechanism and switching these the problem stay with dAD1). So I think that after closing the tray its motor should be switched off and only CD motor remain in the active circuit. There is a TDA7072 for tray motor control and TDA7073 for CD. Also there is a mechanical switch that engaged by rotation of tray gears that I don't know what it is doing.
I would guess that when the tray is closed, the switch closing would spin up the motor so the CD track info is read?
I have come to this thought as well. The switch is working and the mechanism engage it fine but CD will not start to spin. Maybe the control chip TDA 7073 does not pass the right signal.
